Low-dose chidamide reversed thrombocytopenia in passive ITP mice. (A) Low-dose chidamide (0.1 mg/kg, twice a week) improved platelet counts in mice immunized with monoclonal rat anti-mouse CD41 platelet antibody at 120 hours compared with the other dosages. (B) Low-dose chidamide (0.1 mg/kg, twice a week) improved transient thrombocytopenia in passive ITP mice at 72 and 120 hours after immunization. *P < .05, **P < .01.